Siemens SIMOTICS T-1FW6 Operating Instructions Manual page 98

Maintenance
9.1 Safety instructions for maintenance
Electrical shock hazard
Every movement of the rotor compared with the stator and vice versa induces a voltage at the
stator power connections.
When the motor is switched on, the stator power connections are also at a specific voltage.
If you use defective cable ports, you could suffer an electric shock.
• Only mount and remove the electrical components if you are qualified to do so.
• Any work carried out at the motor must always be done with the system in a no-voltage
• Do not touch the cable ports. Correctly connect the stator power connections, or insulate
• Do not disconnect the power connections when the stator is under voltage (live).
• Only use the specific power cables intended for the purpose.
• First connect the protective conductor (PE).
• Connect the cable shield through a wide area.
• First connect the power cable to the stator before you connect the power cable to the
• First disconnect the connection to the inverter before you disconnect the power connection
• Disconnect the protective conductor PE last.
Risk of electric shock as a result of residual voltages
There is a risk of electric shock if hazardous residual voltages are present at the motor
connections. Even after switching off the power supply, active motor parts can have a charge
exceeding 60 μC. In addition, even after withdrawing the connector 1 s after switching off the
voltage, more than 60 V can be present at the free cable ends.
• Wait for the discharge time to elapse.
Risk of injury when carrying out disassembly work
Risk of death, serious personal injury and/or material damage when carrying out disassembly
work.
• When performing disassembly work, observe the information provided in the Chapter
96
WARNING
condition.
them properly.
inverter.
to the stator.
WARNING
WARNING
"Decommissioning and disposal (Page 99)".
1FW6 external rotor built-in torque motors
Operating Instructions, 03/2023, A5E49196960B AC